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Sexual Reproduction in Flowering Plants — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYSexual Reproduction in Flowering Plants3 Marks
Question
  1. Describe the endosperm development in coconut.
  2. Why is tender coconut considered a healthy source of nutrition?
  3. How are pea seeds different from castor seeds with respect to endosperm?
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Answer

  1. Endosperm formation, there are three types:
  1. Nuclear endosperm formation repeated free nuclear division take place, a cell wall formed after cell wall nuclear division referred liquid endosperm. Ex-coconut juice.
  2. Cellular endosperm formed with nuclear division, Acoraceal cellular endosperm development while monocot are helobial.
  3. Helobial endosperm formation between the first two nuclei after which one half develops endosperm a long the cellular pattern in coconut.
  1. Coconut water is considered as a ‘fluid of life’ It increase immunity. lender coconut water is a good source of ‘Laceric acid’.
  2. Endosperm internally, consists of two unequal portion of dicotyledonous seed the most common dicot seeds age of gram, pea castor etc. these testa hard end is of different colour in different seeds.

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